PROBLEM TO BE SOLVED: To provide an industrial manufacturing method of jam products using fructose, inhibiting Maillard reaction so as to emphasize the natural sweetness and delicacy inherent to fruits.SOLUTION: The manufacturing method of jam products to which fructose is added prior to a step of concentration by heating under reduced pressure includes: the step of concentration by heating under reduced pressure for concentrating a thawed product of frozen sweetened fruits a cooling step of cooling the concentrated product obtained in the step of concentration by heating under reduced pressure and a heat sterilization step of sterilizing the cooled concentrate by heat.COPYRIGHT: (C)2015,JPO&INPIT【課題】フルクトースを使用して工業的にジャム類を製造するにあたり、メイラード反応を抑制し、果実本来の自然な甘さと美味しさを際立たせる。【解決手段】フルクトースが減圧加熱濃縮工程以前に添加されているジャム類の製造方法であって、凍結加糖果実類の解凍物を減圧加熱濃縮する減圧加熱濃縮工程、減圧加熱濃縮工程で得られた濃縮物を冷却する冷却工程、及び冷却した濃縮物を加熱殺菌する加熱殺菌工程を含む。【選択図】図1
